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249981 (2001 VR101)
Classification: Main-belt Asteroid          SPK-ID: 2249981
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09081952664860439 3.7091e-08  
a 2.779161413794994 2.132e-08 au
q 2.526759289714066 1.0749e-07 au
i 4.077458572543156 4.7021e-06 deg
node 280.8870658260758 6.1347e-05 deg
peri 97.73480554603046 6.9571e-05 deg
M 303.2202454955907 3.0336e-05 deg
tp 2458867.407079699729
(2020-Jan-18.90707970)
0.00014288 TDB
period 1692.267772740031
4.63
1.9473e-05
5.331e-08
d
yr
n .2127322908342731 2.4479e-09 deg/d
Q 3.031563537875921 2.3256e-08 au
  Orbit Determination Parameters
   # obs. used (total)      409  
   data-arc span      6533 days (17.89 yr)  
   first obs. used      2001-11-12  
   last obs. used      2019-10-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59136  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-08 02:49:44  

Additional Information
 Earth MOID = 1.53197 au 
 Jupiter MOID = 2.40964 au 
 T_jup = 3.324 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.9   n/a MPO454854  
diameter diameter 3.471 km 0.082 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.093   0.014 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

249981 (2001 VR101)          Discovered 2001-Nov-12 by LINEAR at Socorro
Reference: 20100923/Numbers.arcLast Updated: 2010-09-27
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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